Control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach

Abstract In one of the largest oil-gas fields in Daqing, China, the anticlines are important structures that hold natural gas. The origin of the symmetric anticlines, which have bends on both the limbs, remains under debate. This is especially true in the case of the anticline in Xujiaweizi (XJWZ),...

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Autores principales:	Wei Long, Zhongquan Li, Ying Li, Junliang Chen, Hongkui Li, Shuangshuang Wan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/34ffc461e92c49efb919766abeb95071
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spelling	oai:doaj.org-article:34ffc461e92c49efb919766abeb950712021-12-02T12:30:51ZControl of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach10.1038/s41598-017-00249-x2045-2322https://doaj.org/article/34ffc461e92c49efb919766abeb950712017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00249-xhttps://doaj.org/toc/2045-2322Abstract In one of the largest oil-gas fields in Daqing, China, the anticlines are important structures that hold natural gas. The origin of the symmetric anticlines, which have bends on both the limbs, remains under debate. This is especially true in the case of the anticline in Xujiaweizi (XJWZ), which has recently been the focus of gas exploration. A compressive force introduced by a ramp/flat fault was suggested as its origin of formation; however, this is inconsistent with the reconstruction of the regional stress fields, which show an extensive environment. An alternative explanation suggests a normal fault-related fold under extensive stress. However, this mechanism has difficulty explaining the very localized, rather than wide-spread, development of the anticline along the proposed controlling normal fault. The well-developed bends on both limbs of the anticline are also very different from the typical roll-over anticline. Here, we conduct an experimental study showing that the very localized development of the bent-on-both-limbs anticline is controlled by the geometry of the underlying fault-plane. A ramp/flat fault plane can introduce an anticline with bends on both limbs, while a smooth fault plane will develop a roll-over anticline with a bend on only one limb.Wei LongZhongquan LiYing LiJunliang ChenHongkui LiShuangshuang WanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-5 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Wei Long Zhongquan Li Ying Li Junliang Chen Hongkui Li Shuangshuang Wan Control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach
description	Abstract In one of the largest oil-gas fields in Daqing, China, the anticlines are important structures that hold natural gas. The origin of the symmetric anticlines, which have bends on both the limbs, remains under debate. This is especially true in the case of the anticline in Xujiaweizi (XJWZ), which has recently been the focus of gas exploration. A compressive force introduced by a ramp/flat fault was suggested as its origin of formation; however, this is inconsistent with the reconstruction of the regional stress fields, which show an extensive environment. An alternative explanation suggests a normal fault-related fold under extensive stress. However, this mechanism has difficulty explaining the very localized, rather than wide-spread, development of the anticline along the proposed controlling normal fault. The well-developed bends on both limbs of the anticline are also very different from the typical roll-over anticline. Here, we conduct an experimental study showing that the very localized development of the bent-on-both-limbs anticline is controlled by the geometry of the underlying fault-plane. A ramp/flat fault plane can introduce an anticline with bends on both limbs, while a smooth fault plane will develop a roll-over anticline with a bend on only one limb.
format	article
author	Wei Long Zhongquan Li Ying Li Junliang Chen Hongkui Li Shuangshuang Wan
author_facet	Wei Long Zhongquan Li Ying Li Junliang Chen Hongkui Li Shuangshuang Wan
author_sort	Wei Long
title	Control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach
title_short	Control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach
title_full	Control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach
title_fullStr	Control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach
title_full_unstemmed	Control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach
title_sort	control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/34ffc461e92c49efb919766abeb95071
work_keys_str_mv	AT weilong controloffaultplanegeometryontheformationofanormalfaultrelatedanticlineanexperimentalapproach AT zhongquanli controloffaultplanegeometryontheformationofanormalfaultrelatedanticlineanexperimentalapproach AT yingli controloffaultplanegeometryontheformationofanormalfaultrelatedanticlineanexperimentalapproach AT junliangchen controloffaultplanegeometryontheformationofanormalfaultrelatedanticlineanexperimentalapproach AT hongkuili controloffaultplanegeometryontheformationofanormalfaultrelatedanticlineanexperimentalapproach AT shuangshuangwan controloffaultplanegeometryontheformationofanormalfaultrelatedanticlineanexperimentalapproach
_version_	1718394269479206912

Control of fault plane geometry on the formation of a normal fault-related anticline: an experimental approach

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